CRM Microsoft Dynamics two way Integration with WordPress

My goal is to create the integration CRM and WordPress, which allows to manage contact information, content and frequency of emails, paying and renewing membership online. All of which must sync with CRM system (Microsoft Dynamics)

Please advice two way integration:
1) Storing the data from wordpress to CRM(Microsoft Dynamics)

2) Fetching the data from CRM to wordpress

Gravity form plugin in wordpress works for one way integration, storing the data to CRM.

Also, is it possible to integrate by using web service (if yes, which one and how to implement)?

Thanks.